I was going to suggest that Chelsea (disguised as Najenda in the decoy party) was going to die soon because her cat form was already seen once. However, both Wave and Kurome are fighting Akame's group so her form shouldn't be recognisable. She still wouldn't be able to fend off Esdeath in a real fight though, so she'd better hope she can bail out like last time. This "information leak" doesn't sound good.